Estimation method of car travel time on road section with mixed traffic stations based on reliability model

A technology of passing time and cars, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve the problems of single motor vehicle traffic flow, analysis machine non-mixed traffic, etc., and achieve accurate model estimation results, Simple data acquisition and processing, strong operability and transferability

CN109544919BInactive Publication Date: 2020-11-10BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-11-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for estimating transit time of a car on a mixed-traffic site road section based on a reliability model. The method comprises the steps of: the step 1: taking each carpassing a bus stop road section as an observation sample, taking the moment when a car arrives at a bus stop starting point as a keyword, and matching buses, cars and non-motor vehicles within a period of time before the moment into the observation sample to construct car road section transit time sample data; the step 2: building a bus road section transit time reliability model at the bus stopin a mixed-traffic environment, estimating parameters of the reliability model, and finally obtaining a final mathematical expression of the car road section transit time reliability model; and the step 3: on the basis of the step 2, obtaining the real-time bus arrival flow, the car arrival flow and the non-motor vehicle arrival flow as the input variables of the car road section transit time reliability model to estimate or predict the currently arrived car road section transit time.
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Description

technical field

[0001] The invention relates to a reliability model-based method for estimating the travel time of cars in road sections with mixed traffic stations. Background technique

[0002] In my country's urban branch roads and trunk roads, bus stops are often set on non-motorized lanes. When buses enter and leave the station, they will conflict with cars and non-motorized vehicles. When the bus stops at the station, non-motorized vehicles will detour to the motorized lane. Driving, resulting in mutual interference of cars, buses and non-motorized vehicles, which is likely to cause delays in vehicle transit time and decline in traffic capacity of road sections, thereby affecting the smooth flow of the entire transportation network. The phenomenon of machine-non-mixed traffic at bus stations on urban branch roads and arterial roads is very typical in my country. Under this mixed traffic environment, the interaction and interference between the three types of vehicles at...

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Embodiment Construction

[0038] The following is attached Figure 1-2 The present invention is described in further detail.

[0039] Step 1: Collect historical data such as mixed traffic flow and car travel time.

[0040] The road section at the bus station can be defined as the road section between two intersections before and after the bus station as the observation section at the bus station. It can also be based on the actual road conditions, for example, the road section with a total length of 200 meters in the first 100 meters and the last 100 meters specified as the center of the bus station is the observation road section.

[0041] Mixed traffic flow data can be obtained by using coils or video detectors at the upstream intersection of the bus station, including vehicles entering the observed road section in all directions, such as going straight, turning left, and turning right. Statistical historical data of car flow, bus flow and non-motor vehicle flow entering the bus stop section in a g...